Splitting-machine.



F. M. FURBER.

SPLITTING MACHINE.

APPLICATION FILED MAR. 2. 1914.

Patented May 1, 1917.

VWWVESSES UNITE STATEE ATET UFFIQE.

FREDERICK M. FURBER, 0F REVERE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SPLITTING-MACHINE.

Specification of Letters Patent.

Patented May 1, 1917.

To all whom it may concern.

Be it known that I, FREDERICK M. FURBER, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Splitting-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to splitting machines and is herein illustrated in connection with a machine for forming on the heel portion of a sole a thin flap which is subsequently bent down at an angle to the surface of the sole and cemented to the breast of a wooden heel.

In my prior Patent No. 1,111,255 I have described a machine for forming such a flap. The present invention is concerned with mechanism for locating the position of the flap with respect to the sole and for imparting to the flap a thickened base.

It sometimes happens that when the flap is bent down in front of a heel the stock cracks or breaks at its base along the line of the bend. One object of the present invention is to provide means for forming upon a sole or other piece of stock a flap of predetermined thickness and means for increasing the thickness of said flap at its base. In this way the hinge, so to speak, of the flap is made stronger and the objectionable breaking or cracking prevented.

In the machine of my prior application the knife is caused to enter the edge of the sole at the heel so that the flap which is formed extends to said edge. It is sometimes desirable, however, for example in the manufacture of turned shoes, to start the flap at a distance from the edge of the sole so as to leave a portion of the sole at the edge of the heel of unreduced thickness. Another object of the invention is to provide means for thus locating the flap with respect to the sole.

These andother features of the inven tion, including certain details of construction and combinations of parts, will be described in connection with an illustratve machine nd. p inted o t in the appe ded claims.

Referring to the accompanying drawings,

Figure 1 is a perspective of a machine in which the present invention is embodied,

Fig. 2 is a longitudinal section through a portion of the machine shown in Fig. 1, a portion of the sole which has been operated upon being included in this figure, and

Fig. 3 is a detail showing more particularly the mounting of the roll -10.

The present machine is provided with a flat inclined bed 1 supported by springs 3 and having a corrugated face upon which the sole or other piece of work is laid. Upon ways 5 formed on the base or frame of the machine a carriage 7 is slidably mounted, said carriage having fast thereto a knife 9. A gage or presser 11 in the form of a mutilated cylinder has trunnions which are loosely mounted in suitable hearings in the carriage 7 and has threaded into it a pin 18 by which the angular position of the gage 11 may be regulated in the manner presently to be described, it being understood that the depth of cut of the knife depends upon the distance of the efiective face of the gage from the plane of the table 1.

The carriage 7 is reciprocated over the bed 1 by means of a connecting rod 15 which is pivoted near its lower end at 17 to the carriage 7 and at its upper end upon a hollow stud 19 which may be clamped by means of the pin 21 and nut 23 to a. rotatable segmental plate 25, said pin having a head which is received in the undercut groove 27 in said plate. The groov 27 is struck about the axis of rotation of the plate 25 as a center and consequently the carriage 7 is always moved in apath of fixed extent although the point at which motion begins and ends may be varied. The plate is rotated from a power shaft 29 through a one revolution clutch mechanism which may be of any suit-- able type. The mechanism which has been described above is practically the same as that of the machine of my former application and will not be described further in detail. It will be understood that when the sole is placed upon the bed 1 and the onerevolution clutch thrown in the carriage 7 will traverse the bed, and that if the gage 11 is located above the plane of the knife there will be pr duced pon sa d sole a flap the thickness of which will depend upon the location of the gage with respect to the knife.

In my prior machine mechanism is provided for cutting off the flap if desired. The present machine, on the other hand, has mechanism for increasing the thickness of said flap at its base. A controlling member in the form of a yoke 31 has threaded through it an adjusting stop screw 33 against the end of which the head of the pin 13 is at all times held by a spring 35. Through the down-turned arms of said yoke extend pivot screws 37 said screws having the usual conical ends received in the usual conical sockets which in this case are formed in the ends of the trunnions of the gage 11. The force of the spring 35 is exerted toward the right as viewed in Fig. 2 so as to urge the gage 11 continually in a clockwise direction. In order to hold the yoke 31 against the action of the spring an arm 39, which in the present case is an extension of the connecting rod 15, extends over said yoke and car ries at its outer end a roller 40 which contacts with the forward edge or face 131 of the yoke. This edge or face is curved as shown in Fig. 1, the curve being an arc of a circle having the axis of the pivot 17 as a center. If now the curve of this edge or face 131 of the yoke 31 were unbroken the angular movement of. the arm 39, when the carriage 7 is reciprocated, would have no effect upon the gage 11 other than to hold it against the force of the spring 35 in whatever angular position it had been given by adjustment of the stop screw 33. In such case it is evident that the thickness of the flap produced upon the sole would be uniform.

In order to produce a thickened portion at the base of the flap the edge or face 131 of the yoke is flattened at its center portion as indicated at 231. When, therefore, this flat portion is traversed by the roller 40 the spring 35 is permitted to move the gage 11 slightly in a clockwise direction with the result that the sole is raised a little by the springs 3 of the yielding bed 1, and the knife cuts a little deeper into the sole. In Fig. 2 a portion of a sole is indicated at and thethickened base of the flap at 200.

As has been stated, it is sometimes desirable that the knife shall start to cut at some distance from the edge of the sole. In the illustrated machine this is accomplished by maintaining the gage 11 fora predetermined portion of the stroke of the knife in such an angular position that it holds the sole depressed below the plane of the knife and then at a proper time permitting the gage to turn so that the springs 3 may raise the sole and cause the knife to enter its surface to form the flap.

Referring to Fig. '1 the mechanism by which this is accomplished comprises a block 41 pivoted on one of the screws 37 and having in its side a vertical channel rectangular in cross section in which the adjacent downwardly extending arm of the yoke 3'. is received. This channel is of greater width than the arm and has threaded through its walls two oppositely disposed set screws 43 by which the relative angular position of the yoke with respect to the block may be determined. Mounted in a transverse bore in the block 41 and held in adjusted position by pinch bolts 45 is a rod 47 the flattened end of which is received in a guideway formed between a cap 49 which is fast to the driving shaft 29 and a collar 50 which is fast to a stud 51 projecting from the cap 49. With the parts in the position shown in the drawings the gage 11 is held in its extreme counter clockwise position in which v the lowermost surface of the gage is slightly below or exactly in the plane of the edge of the knife; and as long as the rear end of the rod 47 is held beneath the stud 51 the gage will continue so as to be held and no cut will be produced on the sole. 7

The operation of the machine is therefore as follows: A sole is placed upon the bed 1 and the one-revolution clutch is thrown in. When the carriage 7 begins its forward movement the gage 11 and knife 9 retain the relative position shown until the end of the rod 47 is drawn from beneath the stud 51 whereupon the spring 35 acts to rotate the gage 11 in a clockwise direction thereby in effect raising the gage and permitting the sole to be lifted by the springs 3 into the path of the knife. The extent of the clockwise movement of the gage is, of course, determined by the position of the set screw 33 and .the relation of the yoke 131 to the roller 40. As the carriage 7 reaches the limit of its forward stroke the roller 40 encounters the flattened face 231 whereupon the spring 35 imparts to the gage 11 a further slight movement in a clockwise direction with the result that the base of the flap produced by the knife is thickened as indicated at 200. The carriage 7 is then withdrawn and the machine comes to rest with the parts in the position shown, it being noted that the rear end of the rod 47 is provided with an inclined face 53 which causes the rod to ride under the stud 51.

The extent or length of the flap produced depends upon the location of the sole upon the bed 1, the higher up the sole is placed the longer being the flap. The extent of the uncut margin 300 of the sole depends also in a sense upon the position of the sole with respect to the bed 1, but for any given position of a sole may be varied by adjusting the rod 47 in the block 41 so as to hasten or delay the time at which the rear end of the rod passes from beneath the stud 51.

Although the invention has been set forth in connection with a particular machine it should be understood that the invention in the scope of its application is not limited to the particular machine shown and described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States:

1. A machine of the class described, having, in combination, means for forming a flap on a piece of stock, and means acting in conjunction with the flap forming means for increasing the thickness of the flap along the entire base thereof.

2. A machine of the class described, having, in combination, means for forming a llap on a piece of stock, and automatic means acting in conjunction with the flap forming means for increasing the thickness of the flap at the base thereof.

3. A machine of the class described having, in combination, a substantially flat bed to support a piece of stock, a knife and gage -ar1.-anged to act in unison in conjunction with said bed to produce on the piece of stock a flap of predetermined thickness, and mians for increasing said thickness at the base of said flap.

4. A machine of the class described having, in combination, a substantially flat bed to support a piece of stock, a knife and gage arranged to act in unison in conjunction with said bed to produce on the piece of stock a flap of predetermined thickness, and automatic means for increasing said thick ness at the base of said flap.

5. A machine of the class described having, in combination, a bed to support a piece of stock, a carriage, a knife and a gage mounted in said carriage, means for causing said bed to be traversed by said carriage to produce on said piece of stock a flap of predetermined thickness, and means for operating said gage to increase said thickness at the base of said flap.

6. A machine of the class described having, in combination, a bed to support a piece of stock, a carriage, a knife and a gage mounted in said carriage, means for causing said bed to be traversed by said carriage to produce on said piece of stock a flap of predetermined thickness, and automatic means for operating said gage to increase said thickness at the base of said flap.

7. A machine of the class described having, in combination a yielding bed to support a piece of stock, a carriage, means for producing relative movement of said bed and carriage in a direction parallel to the surface of said bed, a knife mounted in said carriage, a gage for depressing said piece of stock to determine the depth of cut of said knife, and means acting during the cutting operation to raise the gage and thereby cause the knife to cut deeper into the stock.

8. A machine of the class described having, in combination, a yielding bed to support a piece of stock, a carriage, means for producing relative movement of said bed and carriage in a direction parallel to the surface of said bed, a knife mounted in said carriage, a gag-e for depressing said piece of stock to determine the depth of cut of said knife, and automatic means acting during the outing operation to raise the gage and thereby cause the knife to cut deeper into the stock.

9. A machine of the class described having, in combination, a bed for supporting a piece of stock, a carriage movable over said bed, a knife fast to said carriage, a gage rotatably mounted in said carriage in advance of said knife, said gage being constructed and arranged by its angular posi tion to determine the depth of cut of said knife, a spring continually urging said gage in one direction, a controlling member for determining the extent to which said gage shall be moved by said spring and means for permitting said gage and controlling member to be moved by said spring just prior to the end of the cutting stroke of said knife.

10. A machine of the class described having, in combination, a knife, a substantially flat yielding bed for supporting a piece of stock, means for causing relative movement between said bed and knife, means for holding said stock depressed during a portion of the traverse of said stock by said knife,means for raising said stock at a predetermined pointin the traverse to cause said knife to enter said stock, and means for preventing said knife from cutting through said stock.

11. A machine for producing a flap upon a piece of stock having, in combination, a bed for supporting a piece of stock, a knife, a presser gage arranged to act upon the surface of the stock in advance of the knife and by its position with respect to the bed to determine the thickness of the flap produced by the action of the knife, means for causing relative movement between said bed and said knife and gage to produce said flap, and automatically operated means for 10- cating the free end of the flap at a predetermined distance measured inwardly on the surface from the edge of said stock.

12. A machine for producing a flap upon a piece of stock, having, in combination, a bed for supporting a piece of stock, a knife, a presser gage arranged to act upon the surface of the stock in advance of the knife and by its position with respect to the bed to determine the thickness of the flap produced by the action of theknife, means for causing relative movement between said bed and said knife and gage to produce said flap, automatically operated means for locatingv the free end of the flap at a predetermined distance measured inwardly on the surface from the edge of said stock, and means for varying said distance.

13. A machine of the class described having, in combination, a substantially flat bed for supporting a piece of stock, a knife, means for causing relative traverse of said bed and knife to cause said knife to enter said stock, means automatically operated during said traverse for varying the point of entry, and means for causing said knife to be Withdrawn before it severs said stock.

14. A machine of the class described having, in combination, a substantially flat bed for supporting a piece of stock, a knife, means for causing relative movement between said knife and bed longitudinally of said bed, resilient means for causing relative movement between said knife and bed transversely of the plane of said bed, means for holding said knife and stock out of contact during a portion of the relative movement of said knife. and bed longitudinally of the bed and for thereafter permitting said resilient means to bring said knife and stock into contact, and means for causing said knife to be Withdrawn before-it severs said stock.

l5. Amachine of the class described having, in combination, a bed for supporting apiece of stock, a knife for producing a flap on said stock, a gage the position of Which determines the relative position of the knife With respect to the stock, means for causing relative movement between said bed and saidvknife and gage longitudinally of said bed, means for holding the effective portion of said.

gage below the level of the cutting edge of said knife during part of said relative movement, and means for releasing said holding means at a predetermined point in said rela- ABBm L. FREAK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

